16880869 has 2 divisors, whose sum is σ = 16880870. Its totient is φ = 16880868.

The previous prime is 16880863. The next prime is 16880879. The reversal of 16880869 is 96808861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10975969 + 5904900 = 3313^2 + 2430^2 .

It is a cyclic number.

It is not a de Polignac number, because 16880869 - 2⁷ = 16880741 is a prime.

It is a super-2 number, since 2×16880869² = 569927476390322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16880863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8440434 + 8440435.

It is an arithmetic number, because the mean of its divisors is an integer number (8440435).

Almost surely, 2^16880869 is an apocalyptic number.

It is an amenable number.

16880869 is a deficient number, since it is larger than the sum of its proper divisors (1).

16880869 is an equidigital number, since it uses as much as digits as its factorization.

16880869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 16880869 is about 4108.6334711191. The cubic root of 16880869 is about 256.5261244033.

The spelling of 16880869 in words is "sixteen million, eight hundred eighty thousand, eight hundred sixty-nine".